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// Geometric Tools, LLC
// Copyright (c) 1998-2014
// Distributed under the Boost Software License, Version 1.0.
// http://www.boost.org/LICENSE_1_0.txt
// http://www.geometrictools.com/License/Boost/LICENSE_1_0.txt
//
// File Version: 5.0.2 (2010/10/01)
#ifndef WM5KEYFRAMECONTROLLER_H
#define WM5KEYFRAMECONTROLLER_H
#include "Wm5GraphicsLIB.h"
#include "Wm5TransformController.h"
#include "Wm5HMatrix.h"
#include "Wm5HQuaternion.h"
namespace Wm5
{
class WM5_GRAPHICS_ITEM KeyframeController : public TransformController
{
WM5_DECLARE_RTTI;
WM5_DECLARE_NAMES;
WM5_DECLARE_STREAM(KeyframeController);
public:
// Construction and destruction. If the translations, rotations, and
// scales all share the same keyframe times, then numCommonTimes is
// set to a positive number. Each remaining number is numCommonTimes
// when the channel exists or zero when it does not. If the keyframe
// times are not shared, then numCommonTimes must be set to zero and
// the remaining numbers set to the appropriate values--positive when
// the channel exists or zero otherwise.
//
// The Transform input initializes the controlled object's local
// transform. The previous behavior of this class was to fill in only
// those transformation channels represented by the key frames, which
// relied implicitly on the Spatial mObject to have its other channels
// set appropriately by the application. Now KeyframeController sets
// *all* the channels.
KeyframeController (int numCommonTimes, int numTranslations,
int numRotations, int numScales, const Transform& localTransform);
virtual ~KeyframeController ();
// Member access. After calling the constructor, you must set the data
// using these functions.
inline int GetNumCommonTimes () const;
inline float* GetCommonTimes () const;
inline int GetNumTranslations () const;
inline float* GetTranslationTimes () const;
inline APoint* GetTranslations () const;
inline int GetNumRotations () const;
inline float* GetRotationTimes () const;
inline HQuaternion* GetRotations () const;
inline int GetNumScales () const;
inline float* GetScaleTimes () const;
inline float* GetScales () const;
// The animation update. The application time is in milliseconds.
virtual bool Update (double applicationTime);
protected:
// Support for looking up keyframes given the specified time.
static void GetKeyInfo (float ctrlTime, int numTimes, float* times,
int& lastIndex, float& normTime, int& i0, int& i1);
APoint GetTranslate (float normTime, int i0, int i1);
HMatrix GetRotate (float normTime, int i0, int i1);
float GetScale (float normTime, int i0, int i1);
// This array is used only when times are shared by translations,
// rotations, and scales.
int mNumCommonTimes;
float* mCommonTimes;
int mNumTranslations;
float* mTranslationTimes;
APoint* mTranslations;
int mNumRotations;
float* mRotationTimes;
HQuaternion* mRotations;
int mNumScales;
float* mScaleTimes;
float* mScales;
// Cached indices for the last found pair of keys used for interpolation.
// For a sequence of times, this guarantees an O(1) lookup.
int mTLastIndex, mRLastIndex, mSLastIndex, mCLastIndex;
};
WM5_REGISTER_STREAM(KeyframeController);
typedef Pointer0<KeyframeController> KeyframeControllerPtr;
#include "Wm5KeyframeController.inl"
}
#endif
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